Common use of Documents available on website Clause in Contracts

Documents available on website. Copies of the following documents shall be made available on Keysight’s and Spirent’s websites at ▇▇▇▇://▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇.▇▇▇/investor-resources/proposed-acquisition-of-spirent and ▇▇▇▇▇://▇▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇.▇▇▇, respectively, until the Effective Date: • the Confidentiality Agreement; • the Clean Team Agreement; • the Confidentiality and Joint Defence Agreement; • the Co-operation Agreement; • documents relating to the financing of the Acquisition referred to in paragraph 13 above; • the consents from Centerview, Evercore, Rothschild, UBS and Jefferies to being named in this announcement; and • this announcement. Keysight Technologies Inc. Tel: +▇ (▇▇▇) ▇▇▇-▇▇▇▇ ▇▇▇▇▇ ▇. ▇▇▇▇, Vice President, Treasurer & Investor Relations ▇▇▇▇▇▇▇ ▇. ▇▇, Senior Vice President, General Counsel & Secretary London: ▇▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇▇▇▇ Menlo Park: ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇ Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ Tel: +▇ (▇▇▇) ▇▇▇ ▇▇▇▇ London: ▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇ New York: ▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇ Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ Tel: +▇ (▇▇▇) ▇▇▇ ▇▇▇▇ Teneo (Public Relations Adviser to Keysight) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ Spirent Communications plc Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, Chief Executive Officer ▇▇▇▇▇ ▇▇▇▇, Chief Financial & Operations Officer ▇▇▇▇▇ ▇▇▇▇▇▇, Company Secretary & General Counsel Rothschild & Co (Joint Lead Financial Adviser to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇ UBS (Joint Lead Financial Adviser and Corporate Broker to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ (Financial Adviser and Corporate Broker to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇▇ Dentons Global Advisers (Public Relations Adviser to Spirent) Tel: +▇▇ (▇) ▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇-▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ Freshfields Bruckhaus ▇▇▇▇▇▇▇▇ LLP and WilmerHale are retained as legal advisers to Keysight. ▇▇▇▇▇▇▇▇▇▇ LLP is retained as legal adviser to Spirent. BNP Paribas Securities Corp. and Citibank, N.A. are providing financing to Keysight and have also provided financial advice to Keysight in relation to the Acquisition. This announcement contains inside information in relation to Spirent. The person responsible for arranging the release of this announcement on behalf of Spirent is ▇▇▇▇▇ ▇▇▇▇▇▇, Company Secretary & General Counsel.

Documents available on website. Copies of the following documents shall be made available on Keysight’s and Spirent’s websites at ▇▇▇▇://▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇.▇▇▇/investor-resources/proposed-acquisition-of-spirent and ▇▇▇▇▇://▇▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇.▇▇▇, respectively, until the Effective Date: • the Confidentiality Agreement; • the Clean Team Agreement; • the Confidentiality and Joint Defence Agreement; • the Co-operation Agreement; • documents relating to the financing of the Acquisition referred to in paragraph 13 above; • the consents from Centerview, Evercore, Rothschild, UBS and Jefferies ▇▇▇▇▇▇▇▇▇ to being named in this announcement; and • this announcement. Keysight Technologies Inc. Tel: +▇ (▇▇▇) ▇▇▇-▇▇▇▇ ▇▇▇▇▇ ▇. ▇▇▇▇, Vice President, Treasurer & Investor Relations ▇▇▇▇▇▇▇ ▇. ▇▇, Senior Vice President, General Counsel & Secretary London: ▇▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇▇▇▇ Menlo Park: ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇ Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ Tel: +▇ (▇▇▇) ▇▇▇ ▇▇▇▇ London: ▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇ New York: ▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇ Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ Tel: +▇ (▇▇▇) ▇▇▇ ▇▇▇▇ Teneo (Public Relations Adviser to Keysight) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ Spirent Communications plc Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, Chief Executive Officer ▇▇▇▇▇ ▇▇▇▇, Chief Financial & Operations Officer ▇▇▇▇▇ ▇▇▇▇▇▇, Company Secretary & General Counsel Rothschild & Co (Joint Lead Financial Adviser to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇ UBS (Joint Lead Financial Adviser and Corporate Broker to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ (Financial Adviser and Corporate Broker to Spirent) Tel: +▇▇ (▇)▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇▇ Dentons Global Advisers (Public Relations Adviser to Spirent) Tel: +▇▇ (▇) ▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇-▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ Freshfields Bruckhaus ▇▇▇▇▇▇▇▇ LLP and WilmerHale are retained as legal advisers to Keysight. ▇▇▇▇▇▇▇▇▇▇ LLP is retained as legal adviser to Spirent. BNP Paribas Securities Corp. and Citibank, N.A. are providing financing to Keysight and have also provided financial advice to Keysight in relation to the Acquisition. This announcement contains inside information in relation to Spirent. The person responsible for arranging the release of this announcement on behalf of Spirent is ▇▇▇▇▇ ▇▇▇▇▇▇, Company Secretary & General Counsel.